diff --git a/03-DESIGN/01-to-be/47-milestones/G-20-lead-answers.md b/03-DESIGN/01-to-be/47-milestones/G-20-lead-answers.md
index 889bf7f4..b64c23e3 100644
--- a/03-DESIGN/01-to-be/47-milestones/G-20-lead-answers.md
+++ b/03-DESIGN/01-to-be/47-milestones/G-20-lead-answers.md
@@ -197,3 +197,10 @@ names the principle that settles it, and is cited as "design 47 G A-n".
   `launch.CallTimeout` (30 seconds), counted from its first chunk; a session also ends when its bundle's channel closes
   (the child's exit), as §518 says. The runner answers `mesh/capabilities` with `{words}` (§576), so a bundle's
   capability check passes.
+- **A-50** (§421, §379, §466; principle 7) The node-engine makes each artifact's reference from the want's part digest
+  in the form the store is already addressed by, `artifact-store://<module>/<artifact>/blobs/<digest>`, and the rest
+  of the resolved manifest (languages, launchers, template texts) from the entry and the parts fetched by digest; its
+  read of the builder's done key goes.
+- **A-51** (§388; principle 7) The grants part moves to the writer only the four kinds §388 names (`view-waits`,
+  `first-view-unanswered`, `first-view-empty`, `binding-unlisted`), through the held writer of a process (A-29, A-40)
+  with the foundation stream form of §529; its other conditions stay as they are.